package cn.tedu.jdbc;

import java.sql.*;
import java.util.Scanner;

public class JDBCLogin02 {
    public static void main(String[] args) {
        try (Connection connection = DBUtil.getConnection();) {
            Statement statement = connection.createStatement();
            Scanner scanner = new Scanner(System.in);
            String username = scanner.nextLine();
            String password = scanner.nextLine();
            String sql = "select * from userinfo where username = ? and password = ?";
            PreparedStatement ps =  connection.prepareStatement(sql);
            // 设置 ？ 的值
            ps.setString(1,username);
            ps.setString(2,password);
            ResultSet r = ps.executeQuery();
            if (r.next()) {
                String nickname = r.getString("nickname");
                System.out.println("登录成功，欢迎您：" + nickname);
            }else {
                System.out.println("登录失败");
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}
